Vulnerability in Mozilla Firefox
CVE-2020-26978
Using techniques that built on the slipstream research, a malicious webpage could have exposed both an internal network's hosts as well as services running on the user's local machine. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.013 (70.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: +0.001
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Firefox Esr
- Mozilla Thunderbird — versions unspecified
References
- www.mozilla.org/security/advisories/mfsa2020-54/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2020-56/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2020-55/ (Vendor Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Permissions Required)
Frequently asked questions
- What is CVE-2020-26978?
- CVE-2020-26978 is a medium-severity vulnerability in Mozilla Firefox. CVSS score: 6.1/10. Published 2021-01-07.
- How severe is CVE-2020-26978?
- Medium severity. CVSS v3 base score is 6.1 out of 10.